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Optical Imaging Technology In Colonoscopy - Is There A Role For Photometric Stereo (2020)
Journal Article
Smith, M., Shandro, B. M., Emrith, K., Slabaugh, G., & Poullis, A. (in press). Optical Imaging Technology In Colonoscopy - Is There A Role For Photometric Stereo. World Journal of Gastrointestinal Endoscopy, 12(5), 138-148. https://doi.org/10.4253/wjge.v12.i5.138

Abstract Colonoscopy screening for the detection and removal of colonic adenomas is central to efforts to reduce the morbidity and mortality of colorectal cancer. However, up to a third of adenomas may be missed at colonoscopy, and the majority of p... Read More about Optical Imaging Technology In Colonoscopy - Is There A Role For Photometric Stereo.

Ensemble-Empirical-Mode-Decomposition based micro-Doppler signal separation and classification (2017)
Journal Article
Chen, H., Lin, P., Emrith, K., Narayan, P. P., & Yao, Y. (2017). Ensemble-Empirical-Mode-Decomposition based micro-Doppler signal separation and classification. International Journal of Computer Applications in Technology, 56(4), 253-263. https://doi.org/10.1504/IJCAT.2017.10009946

The target echo signals obtained by Synthetic Aperture Radar (SAR) and Ground Moving Target Indicator (GMTI platforms are mainly composed of two parts, the micro-Doppler signal and the target body part signal. The wheeled vehicle and the track vehicl... Read More about Ensemble-Empirical-Mode-Decomposition based micro-Doppler signal separation and classification.

Ptu-024 - photometric stereo reconstruction for surface analysis of mucosal tissue (2015)
Journal Article
Poullis, A., Groves, C., Slabaugh, G., Emrith, K., & Smith, M. (2015). Ptu-024 - photometric stereo reconstruction for surface analysis of mucosal tissue. BMJ, 64(1), 68-69

This paper provides a novel approach for real-time detection of polyps. Using a photometric stereo sensor for endoscopy imaging in a porcine model, the 3D surface geometry of a porcine gut is recovered. Shape features are extracted from the 3D surfac... Read More about Ptu-024 - photometric stereo reconstruction for surface analysis of mucosal tissue.

Testing the validity of Lambert's law for micro-scale photometric stereo applied to paper substrates (2015)
Presentation / Conference
Azhar, F., Emrith, K., Pollard, S., Smith, M., Adams, G., & Simske, S. (2015, March). Testing the validity of Lambert's law for micro-scale photometric stereo applied to paper substrates. Paper presented at 10th International Conference on Computer Vision Theory and Applications (VISIGRAPP 2015)

This paper presents an empirical study to investigate the use of photometric stereo (PS) for micro-scale 3D measurement of paper samples. PS estimates per-pixel surface orientation from images of a surface captured from the same viewpoint but under d... Read More about Testing the validity of Lambert's law for micro-scale photometric stereo applied to paper substrates.

Photometric stereo reconstruction for surface analysis of mucosal tissue (2014)
Presentation / Conference
Emrith, K., Slabaugh, G., Poullis, A. P., Goves, C., & Smith, M. (2014, July). Photometric stereo reconstruction for surface analysis of mucosal tissue. Paper presented at Medical Image Understanding and Analysis 2014

We introduce photometric stereo reconstruction for surface analysis of mucosal tissue. Photometric stereo captures images of a surface from a single camera, but illuminated from different light sources. From the set of images, a detailed surface rec... Read More about Photometric stereo reconstruction for surface analysis of mucosal tissue.

A novel photometric stereo imaging sensor for endoscopy imaging: Proof of concept studies on a porcine model (2014)
Journal Article
Poullis, A., Groves, C., Slabaugh, G., Emrith, K., & Smith, M. (2014). A novel photometric stereo imaging sensor for endoscopy imaging: Proof of concept studies on a porcine model. Gut, 63(S1), A46-A47. https://doi.org/10.1136/gutjnl-2014-307263.96

The American Society of Gastroenterology Endoscopy led Preservation and Incorporation of Valuable Endoscopy Innovations initiative has identified real time poly diagnosis as one of the next major technology driven changes in endoscopy (1). A number o... Read More about A novel photometric stereo imaging sensor for endoscopy imaging: Proof of concept studies on a porcine model.

Paper type classification based on a new 3D surface texture measure (2014)
Journal Article
Simske, S., Smith, M., Adams, G., Pollard, S., Emrith, K., Malekmohamadi, H., …Simske, S. (2014). Paper type classification based on a new 3D surface texture measure. Electronics Letters, 50(8), 596-598. https://doi.org/10.1049/el.2013.2687

A novel three-dimensional (3D) surface texture measure (3DSTM) is presented based on the micro-geometry of paper surfaces to classify different paper substrates. This is useful to automatically determine whether a document is printed on the correct p... Read More about Paper type classification based on a new 3D surface texture measure.

Real-time recovery of moving 3D faces for emerging applications (2013)
Journal Article
Molleda, J., Smith, M. L., Smith, L. N., Broadbent, L., Emrith, K., Emrith, K., …Molleda, J. (2013). Real-time recovery of moving 3D faces for emerging applications. Computers in Industry, 64(9), 1390-1398. https://doi.org/10.1016/j.compind.2013.03.011

Existing face imaging systems are not suitable to meet the face representation and recognition demands for emerging applications in areas such as interactive gaming, enhanced learning environments and directed advertising. This is mainly due to the p... Read More about Real-time recovery of moving 3D faces for emerging applications.

Measuring perceived differences in surface texture due to changes in higher order statistics (2010)
Journal Article
Clarke, A. D., Maloney, L. T., Chantler, M. J., Emrith, K., Chantler, M. J., Green, P. R., …Clarke, A. D. F. (2010). Measuring perceived differences in surface texture due to changes in higher order statistics. Journal of the Optical Society of America A, 27(5), 1232-1244. https://doi.org/10.1364/JOSAA.27.001232

We investigate the ability of humans to perceive changes in the appearance of images of surface texture caused by the variation of their higher order statistics. We incrementally randomize their phase spectra while holding their first and second orde... Read More about Measuring perceived differences in surface texture due to changes in higher order statistics.

Change in appearance of textures with randomisation of Fourier phase (2009)
Journal Article
Emrith, K., Green, P. R., & Chantler, M. J. (2009). Change in appearance of textures with randomisation of Fourier phase. Perception, 38, 64

It is known that humans can discriminate visual textures on the basis of differences in statistics higher than the second order. However, these results have been obtained using artificial textures made up of geometric elements, and the effects of man... Read More about Change in appearance of textures with randomisation of Fourier phase.


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